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Error Calculations in Measurements Quiz
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Error Calculations in Measurements Quiz

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Questions and Answers

What is the formula for calculating the standard (random) error for a single reading (one trial)?

  • $\Delta x = \text{smallest division of the scale}$
  • $\Delta x = \frac{\text{smallest division of the scale}}{2}$
  • $\Delta x = \frac{\text{half of the smallest division of the scale}}{2}$ (correct)
  • $\Delta x = 2 \times \text{smallest division of the scale}$
  • What is the smallest division for the device with the reading T = 11 ± 0.5 oC?

  • 0.25 oC
  • 0.5 oC
  • 0.75 oC
  • 1 oC (correct)
  • What method is used to calculate the standard error for a set of measurements (readings)?

  • Standard deviation method (correct)
  • Variance method
  • Average deviation method
  • Mean absolute deviation method
  • What is the standard error (Δx) for the set of readings: -0.4, 0.3, -1.3, 1.4, 0.16, 0.09, 1.69, 1.9?

    <p>0.85</p> Signup and view all the answers

    What is the formula for calculating the average value of a set of readings?

    <p>$\text{Average} = \frac{\text{Sum of all readings}}{\text{Number of readings}}$</p> Signup and view all the answers

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